Safety gas-burner.



D. J. WALLACE. SAFETY GAS BURNER. APPLIOATION FILED NOV. 29, 1913.

Patented Oct. 6, 1914.

24mm imllaae.

III/III DAVID J. WALLACE, OF THE UNITED STATES NAVY.

SAFETY GAS-BURNER.

Specification-of Letters Patent.

, Patented Oct. 6, 1914.

Application filed November 29, 1913. Serial No. 803,817.

To all whom it may concern 1 Be it known that I, DAVID J. WALLACE, of the United States Nav a citizen of the United States, serving on U. S; S. Panther, New York, in the county of New York and State of New York, have invented new and useful Improvements in Safety Gas-Burners, of which the following-is a specification.

My invention relates to improvements in gas burners, and one of its objects is the provision of a burner of this type with a novel means adapted to cut off the supply of gas to the tip on the accidental or positive extinguishing of the flame, whereby to avoid those accidents which are usually incident to the extinguishing of the flame by the wind or the unintentional opening of ,the turning plug after extinguishing the flame.

A further ob ect of the invention is the pro-vision of the burner with a gas igniting means adapted to be operated by the means controlling the flow of gas from the burner to the tip.

With the above and other objects in view, the invention consists in the construction, combination, and arrangement of parts hereinafter described and claimed, and illustrated in the accompanying drawings, where1n- Flgure l is a vlew in side elevation of a gas burner constructed in accordance with my invention, Fig. 2 is a sectional view taken on a plane extending vertically and centrally through the burner, the valve being shown in closed position, and Fig. 3 is a similar view, the valve being shown in opened position.

Referring to the drawings by reference numerals, 1 designates a gas bracket of theusual construction and form, 2 being the turning plug, and 3 the threaded lug therefor.

My improved burner comprises a body 4 provided with a gas passage 4 The lower end of ,the body has threaded connection with the stud 3, and the upper end thereof is provided with a tip 5. Projecting in opposite directions from the sides of the body 4: are alined extensions 6 and 7. The extensions 6 and 7 have cylindrical bores which are arranged at right angles to the passage 4 and which communicate with the passage through openings formed in the side walls of the body 1. The extension 6 forms a spring chamber, and the extension 7 a mercury chamber, and mounted in the chambers for movement across the passage a is a solid pansi'on spring 10 cylindrical valve 8. The valve 8 is proyided with a port 9 which when the valve is in openedpo-sition registers with the passage 4* and permits gas to flow to the tip 5. The valve 8 is normally held in closed position, that is with the port 9 out of registration with the passage 4*, by means of a coiled exmounted in the chamber {3. The movement of the valve under the mfluence of the spring 10 is limited by a pin '11 carried by the valve and traveling in a groove 12 which is formed in the upper wall ofthe chamber 6, said pin also preventing the rotation of the valve. A plug 13 closes the outer end of the chamber 6 and is provided on its innerside with an inwardly ex-; tending tapered portion 14, which is adapted to limit the opening movement of the valve 8. The tension of the spring 10 may he regulated, and the opening movement of the valve 8 controlled, by adjusting the plug 13.

A reservoir 15 communicates with the chamber 7 and it and the chamber are full of mercury. The outer end of the chamber 7 is closed by a hollow plug 16 in which is mounted a piston 17. The rod 18 of the piston projects through the plug 16 and is provided with a manipulating head 19.

As before stated, the valve 8 is normally held in closed position by the spring 10, cutting ofi' the supply of gas to the ti 5. WVhcn it is desired to permit gas to ow to the tip 5, the piston 17 is moved inwardly through the medium of the manipulating head 19. This movement of the piston 17 reduces the area of the mercury chamber '7, consequently forcing the valve 8 into opened position. A spring 20, which is carried by the plug 16, and which has a tension equal to that of the spring 10, engages in a recess 21 in. the piston rod 18 and holds the piston 17 inwardly. When the gas is ignited at the tip 5, the mercury in the chamber 7 expands, and as the valve 8 is held from movement to the right by means of the plug extension 14, the pressure of. the expanding mercury is directedagainst the piston 17, and when the pressure is sufficient to overcome the tension of the spring 20 the piston is returned to its normal position. As long as the gas is burning at the tip 5 the valve 8 will be held in open position by the mercury, but as soon as the flame is extinguished, either through the medium of the turning plug 2 or by accident, the mercury l )egins to condense, and when it is con-' densed the spring 10 forces the valve 8 into closed position, thereby cutting ofi the supply of gas to the tip 5. The plug 16 has threaded connection with the chamber 7, and, therefore, should it be found necessary, it can be adjusted to increase or decrease the size of the chamber.

The igniting device comprises a friction member 22 secured to the upper wall of the reservoir 15 and a piece of sparking material '23 carried by an arm 24. The arm 24 is secured to the manipulating head 19 of the piston 17 so that when the piston is moving inwardly to open the valve 8, the sparking material 23 is moved over the friction member 22 creating a spark for igniting the gas as it issues from the tip 5. To prevent the rotation of the arm24, whereby to maintain the sparking material 23 in proper position with relation to the friction mem-. ber 22, the arm 25 is secured at one end of the manipulating head 19and has its opposite end disposed for movement in the groove 26 formed in the upper side of the mercury chamber 7.

It should be apparent description taken in companying drawings, that I provide a gas burner which renders imporssiblethose accidents usually incident to {he extinguishing from the foregoing connection with the acof a burner flame by the wind or the umntentional opening extinguishing the apparent that ple, durable,

manufactured and .sold :at a comparatively low cost, and that it may be readily and the safety gas burner is sun'- of the turning plug after flame. It should also be quickly applied to .a gas bracket oi any eonstruc'tion.

the preferred embodiment of the invention, the body 4', chambers 6 and "7, and

reservoir 15 will form asingle casting.

(Thanges in the form, proportions and :minor details of construction maybe made within the scope of the claims without departing iifrom the spirit or :sacrilfici-ng any of the advantages of the invention.

*Whatl claim and desire to secure by Letiters-i Paitent 'is':-

1. A safety gasburner, compri ng body 4 on opposite sides of the and eficient, that it may be having a gas passage, chambers arranged on opposite" sides of the body and communicating with its passage, a ported valve mounted I in the chambers for sliding movement across the passa e, a spring in one of the chambers to hold 1'. e valve normally closed, mercury in the other chamber, and a piston mounted in said other chamber. 1

2. A safety gas burner, comprising a body having a gas passage, chambers arranged on opposite sides of the body and communicating with its passage, a ported valve mounted in the chambers for sliding movement across the passage, a spring arranged in one of the chambers to hold the valve normally closed, mercury in the other chamber, a iston in said other chamber, and a spring a apted to engage the piston when in one position.

3. A safety gas burner, comprising a-body having a gas passage, chambers arranged on opposite sides of the body and communicating with its passage, 21 portedvalve mounted in the chambers for sliding movement across the passage, a plug closing one of the chambers and provided with a stop, a spring mounted between the plug and the valve, a plug closing the other chamber, mercury between said last named plugand the valve, a piston carried by said last named plug,

. and a spring adapted to engage said piston when in one position.

4. A safety gas burner comprising a body having a gas passage, chambers I arranged body and communicating with its passage, a ported valve 5 mounted in the chambers for sliding move- I mentacross the passage,

means in oneof the "chambers to-hold the valve normally closed, mercury in the other chamber, a piston mounted in said other chamber, and an ign iter carried by said being actuated through t pis'ton.

In testimony whereof I afiix my signature in "presence of two witnesses.

DAVID J. WALLACE.

e medium of said Witnesses:

LOUIS J. PONTIFF,

S. Hos/nan.

iston, said igmter 

